Home / 38,811-58,225.12-21,271.80

Finding the Fourth Proportional to 38,811, 58,225.12 and 21,271.80

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Solution

The fourth proportional to 38,811, 58,225.12 and 21,271.80 is: 31,912.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,811 : 58,225.12 = 21,271.80 : x
  2. Step 2: Convert to fraction form
    38,811/58,225.12 = 21,271.80/x
  3. Step 3: Cross multiply
    38,811x = 58,225.12 × 21,271.80
  4. Step 4: Simplify right side
    38,811x = 1,238,553,107.62
  5. Step 5: Solve for x
    x = 1,238,553,107.62/38,811
  6. Step 6: Final answer
    x = 31,912.42

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.